1use std::ops::Deref;
2use std::ptr;
3
4use crate::check_status;
5use crate::{sys, Env, NapiRaw, Result};
6
7pub struct EscapableHandleScope<T: NapiRaw> {
8 handle_scope: sys::napi_escapable_handle_scope,
9 value: T,
10}
11
12impl<T: NapiRaw> EscapableHandleScope<T> {
13 pub fn open(env: Env, value: T) -> Result<Self> {
14 let mut handle_scope: *mut napi_escapable_handle_scope__ = ptr::null_mut();
15 check_status!(unsafe { sys::napi_open_escapable_handle_scope(env.0, &mut handle_scope) })?;
16 let mut result: *mut napi_value__ = ptr::null_mut();
17 check_status!(unsafe {
18 sys::napi_escape_handle(env.0, handle_scope, NapiRaw::raw(&value), &mut result)
19 })?;
20 Ok(Self {
21 handle_scope,
22 value,
23 })
24 }
25
26 pub fn close(self, env: Env) -> Result<()> {
27 check_status!(unsafe { sys::napi_close_escapable_handle_scope(env.0, self.handle_scope) })
28 }
29}
30
31impl<T: NapiRaw> Deref for EscapableHandleScope<T> {
32 type Target = T;
33
34 fn deref(&self) -> &T {
35 &self.value
36 }
37}
38